William kaisling



w. KAISLING. mums DEVICE.

APPLICATION FILED JULY 13. 1916'.

1,304,062. I Patented May 20,1919.

H Mimi? Z/Z FZZ 21 3227 K525527 57 EZEFZZE UNITED STATES PATENT OFFICE.

WILLIAM KAISLING, OF CHICAGO, ILLINOIS, ASSIGNOR TO KELLOGG SWITCHIBOARD' AND SUPPLY COMPANY, CHICAGQILLINOIS, A CORPORATION OF ILLINOIS.

CALLING DEVICE.

Specification of Letters Patent. Patented May 20, 1919.

Original application filed June 23, 1915, Serial No. 35,752. Divided and this application filed July 13, 1916. Serial No. 109,157.

' and has to do more particularly with calling devices such as are commonly used at telephone substatlons for controlling the automatic switches which are located, at the central ofiice by directiveimpulses to extend the connection fromfa calling substation to a called substation through the agency of the said switches. My invention is preferably adapted to operate in conjunction with the so-called metallic .or two-wire type automatic circuits in which the circuit of the line is interrupted a number of times deter? mined by the adjustment of the calling device. This application is a divisional application of my application for calling devices filed June 23, 1915, $erial Number 35,7 52. V

One of the featuresof my invention is the provision of an improved governing device and the novel method in which the governor device is connected with the powerdriving mechanism of the calling device. 7

It has been found from practice that a calling device of simple construction and one that does not readily get out of order is most desirable,,and to this end I further direct my invention by producing an improved device ofthe class described which will obviate the objectionable features heretofore found in calling devices and embody desirable features and advantages all in a simple, eflicient and economical manner, and to the accomplishment of this object and such others as may hereinafter appear the invention consists in the'novel details of con struction, parts and combination of parts hereinafter described, and pointed out in the appended claims, reference being had to the accompanying drawings in which I illustrate the calling device in the different views, and in which views like reference characters indicate like parts, and in which I Figure l is a rear View of the calling device; Fig. 2 is a bottom view of Fig. 1 wlth certain parts cut away; Fig. 3 is a skeleton particularly perspective View of the governor mechanism; Fig. 4 is a perspectiveview of the spool-shaped member which holds the parts of the governor; and Fig. 5 is a perspective view of the weighted member of the governor. I a

Referring now more in detail to my invention as illustrated, it comprises a main mounting plate 1, havinga flanged portion p 2 and. a forwardly extending cup-shaped portion 3. A main shaft 41 extendsconcen trlcally through the bearing of the main mounting plate '1, and has; a finger-hold actuating member 5 fastened to it in any suitable manner, it being preferably staked at its forward end tolthe" said shaft 4;. The

rests upon the flange 2, the said numerals corresponding with the finger-holds. The

indicating disk 7 has a protective disk 8 oftransparent material such as glass placed in front of it so as to protect the said inclicating disk. .7 J V The ten openings which form the fingerholds are numbered 1, 2, 3, etc., to 0 The calling device is adapted. to transmit from one to ten impulses, the'sa d numerals upon the indicating disk indicatmg thenumber of impulses its corresponding-hold is. adapted to send through the agency of the impulse springs. I also provide a casing 11 for inclosing the forward portion-of the device, the said casing being fastened to the flanged portion 2 of the mounting plate 1 by means of the screws 12. V

A stationary finger stop 13 is mounted upon the flanged portion of the casing 11 by means ofthe screws 12. When the actuating member 5 is advanced in a clock-Wise direction the advancing finger of the operator engages the stop 13 and arreststhe movement of the actuating member 5.

Referring now more particularlyto the operatingmechanism, the main shaft 4 ex tends through a spring barrel 20, which in closes a motor spring 21. The actuating member 5 which is staked to the shaft 4, fits closely against the barrel 20 forming a. cover for the same.

Positioned next to the spring barrel 2O along the shaft a is the gear wheel 26 loosely mounted upon the said shaft. A ratchet wheel 27 is positioned next to the gear wheel 26, the said ratchet 27 bein rigidly fastened to the shaft l in any suitable manner. The ratchet wheel 27 rests against the face of the gear 26 and a pawl 29 pivota lly fastened to the gear wheel 26 is operatively associated with the ratchet wheel 27, the said pawl being held against the said ratchet by means of a spring .30 which is also positioned upon the gear wheel 26, and held in place in any suitable manner. A car wheel 31 is rotatably secured at its opposite ends to the plate 1 and to a bridge plate 32, the said bridge plate being secured to the studs 36, by means of the screws 39. The said studs are staked to the plate 1 thus securely holding the plate upon the main mounting plate 1. The gear 31 has a pinion staked to it in any suitable manner, and this pinion 33 meshes with the gear26. The gear wheel 31 meshes with a pinion 3st which is integral with the shaft of the governor mechanism G, which is adapted to retard the return movement of the finger hold actuating member 5 to a: predetermined speed.

The governor mechanism G comprises a main shaft 35 which is rotatably supported at its opposite ends in the plate 1 and the bridge plate 32. A pinion 34. is out upon the shaft 35 and is shown in mesh with the gear 31. A spool-shaped member 40 holds the governor mechanism which controls the speed of the calling device in its return movement. The governor comprises a weighted member 4a, semi-circular in shape, being pivotally mounted between the two spool heads 42 and 4.3 by means of a pivoted pin 44. A coiled spring 45 is positioned upon the pin 44:, one of its free ends bearing against the weighted member 4L1, and the other free end of the spring bearing against an adjustment pin el-(i. This adjustment pin to in conjunction with the spring regulates the speed at which the governor in ay be driven and therefore, of course, the speed at which the calling device transmits the impulses. The adjustment pin 4C6 has a slotted head 47 so that the pin may be turned and is inserted into the openings 48 and 49 of the spool heads of the member 40. The pin 46 also has a shoulder 50 which forms a bearing surface while the pin is being adjusted to regulate the speed of the governor. The end 51 of the pin is slotted and spread so that when the pin is in place and in a certain adjustment, it will stay so adjusted due to the frictional engagement with the opening i9. A portion of the body of the pin is eccentrically disposed, forming the eccentric portion and one end of the spring 45 rests upon this part of the pin. A piece of fiber 53, or other suitable material, is securely held in the weighted member ll in close proximity to the fulcrum of the weight. The member 40 and the several parts above described as a whole is slipped over the shaft and into a cup-shaped membe 54, which is rigidly secured to the bridge plate 32 in any suitable manner and forms a containing member for the said governor mechanism G. The member 40 is held in position with its several parts upon the shaft 35 by means of the set screw 55.

The governor mechanism G is operatively associated with the train of gearing comprising the gears 26 and 31, and pinions 33 and 34. Now when the member 5 is operated in a clock-wise direction to set the calling device to transmit a certain number of impulses, the gear 26 being loosely mounted upon the shaft permits the movement of the shaft and ratchet also in a clock-wise direction so that the pawl 29 rides over the teeth of the ratchet wheel 27. Upon the return movement of the member 5 with the shaft 4 and ratchet 27 the pawl29 being fastened to' the gear 26, engages one of the teeth of ratchet wheel 27, causing the gear to be carried with it, and this return motion is transmitted by the train of gearing 'to the governor mechanism G. The weighted member 41 being pivotally mountedby the pivot pin 44 in the spool member 40 which is'being rotated due to being fastened to the shaft 35, causes the'member 41 to be forced out by centrifugal force against the tension of the spring 45, The piece of fiber 53 upon the member ll is forced against the inside periphery of the cup 54:, and as the said fiber 53 is held in close proximity to the fulcrum ofthe weighted member 41, the weight of the member tl is multiplied in assisting the fiber 53 to remain in frictional engagement with the inside periphery of the cup 5i against the tension of the spring 4L5, thus permitting the device in its return movement to restore at a predetermined speed. In practice, it'has'been found that a group of. impulses,'ten in number, may be sent in a space from three-fourths to one and one-half seconds of time, allfil o perm the calling device to operate within these limits, I provide adjustable "means forthe governor in the form previously described. Now should it be desired that the device run at a speed so as to transmit ten impulses in say one and one-half seconds, the adjustable pin is turned until theeccentric 52 is at its lowest point so that the end ofthe spring 45 rests upon this lowest point of the eccentric and in this position the spring 45 is under the least tension so that upon the return movement of the device the weighted member 41 is more easily acted upon by centrifugal force causing the fiber to be held firmly in frictional engagement against the inside of the periphery of the cup 5 1. Now when the device is to be speecled up, the adthe member 41 is decreased due to the'increased tension of the spring 45, so that the frictional engagement of the fiber 53, and the inside periphery of the cup 54 is not as greatas in the former case, thus permitting thespeed of the return movement to be increased and also permit a much shorter period for each impulse.

In order to operate the impulse springs of the device,,I' preferably provide an actuat-' ing ratchet 56 insulatingly mounted upon the main shaft 4 and having a plurality of teeth,'12 in number.

Impulse contacts are provided which are interrupted according to the number of impulses to be transmitted, therefore Iprovide a palr of normally closed contacts. One of the contacts is in the form of an adjustable contact screw 60, which has screw-threaded engagement with a lug 61 which is'integ'ral with the L-sha' 'ed member 62, this member 62 being insu atingly mounted upon the plate 32rand held in place by the insulated screws 63.' A screw 64 ha'vingscrew-threaded engagement with the L-shaped member 62 forms a terminal for the adjustable contact 60. 'The'other contact of the impulse springs is'in the form of a spring 65 which is insulatingly mounted upon the bridge-plate 32 by means of the insulated screws 66 and the clampin plate 67. A screw 68 has screwthreadecI engagement with the plate 67 and forms a terminal of the contact 65. I so arrange the impulse contacts that the duration of interruption and contact of the impulse contacts 60, 65, may be varied and to this end I provide the adjustable contact 60 which may be moved inwardly or outwardly in the lug 61. When the contact screw is turned so as to move the contact away from a spring 65 the duration of interruption will be increased and when moved toward the spring the duration of the interruption will be decreased. A pawl 69 and the spring 65 are operatively associated with each other and are connected so as to form a hinged point 70. A spiral spring 71 holds the pawl and spring in hinged relation, the said sprin 71 having; one end fastened toa hook 72 which is preferably integral with the spring 65; the other end of the spring 71 is fastened to a hook 73, which is integral with the pawl 69. The spring71 holding the pawl 69 against the teethof the ratchet 56 which is insulatingly mounted upon the shaft 4. Now if the actuating member 5 is rotated in a clockwise direction, the pawl 69 rides over theteeth of the-ratchet 56, but on the return movement, the nose of the pawl engages a tooth of the ratchet and the spring 65 is drawn forward against its normal tension, thus opening the normal contacts 60, 65, and due to the restorin power of'the motorspring 21, the nose of t e pawl 69 is forced upon the tooth of the ratchet it was engaging against the tension of the spring 71, and when the nose of the pawl passes the teeth last engaged, due to the return movement of the shaft 4, the spring 71 draws the pawl into the next toothed depression of the ratchet to again close the contacts, the said contacts opening and closing according to the number of impulses that are being sent. v

I also provide a pair of shunt springs 75 and 76 by which the subscribers apparatus may be short-circuited while the impulses are being transmitted. The shunt spring 75 is insulatingly mounted upon the plate 32 by means of the insulated screws 63 and the clamping plate 62, the screw 64 forming the terminal for the shunt spring 75. The shunt spring 76 is insulatingly mounted upon the bridge plate 32 by means of the insulated screws 78 and the clampin plate 79, the screw 80 having screw-threa ed engagement with the plate 78 forminga terminal'for the spring 76. An operating stud 81 of insulating material is provided to operate the shunt springs and is positioned upon the shaft 4 next to the ratchet 56, the said stud 81 and the ratchet 56 beingheld in a position upon one end of the shaft 4, by means of a washer 82, and a nut 83, the said nuti83 having a screw-threaded engagement with the endof the shaft 4. The stud 8 1 is normally in engagement with the projecting portion of the shunt spring 76 whereby the said shunt spring contacts are held normally out of engagement, but when the shaft 4 and actuating member 5 are-moved off normal, the stud 81 moving with the shaft 4 :d1sengages the end of thespring 76 allowing the contacts 75, 76 to engage, thecontacts remaining in engagement until the member 81 returns to normal. The lugs 86 upon-the bridge plate 32 are provided to form means for fastening the dial to an instrument.

I will now describe briefly the operation of the device. Let us assume that the operator wishes to effect four operations of the impulse contacts 60, 65, that is to transmlt four impulses, the finger of the operator Wlll be inserted into the finger-hold above the number 4 (not illustrated but understood) and the member 5 isxrotated in a clock-wise direction until the finger of the operator engages the stationary stop 13. The rotatlon of the member 5. also causes the rotation of the main shaft 4 andalso the ratchet 27 and as the driving gear 26 is loose upon the shaft 4 and as pawl 29 is mounted upon the gear 26, the ratchet in its rotation allows the said pawl to pass over. theteethof the ratchet.

The pawl 69 which is operatively associated with the impulse spring also passes over the teeth of the impulse ratchet 56 but not affecting the impulse springs at this time. As the main shaft t leaves normal the stud 81 carried thereby disengages the projection of the shunt spring 76 allowing the said spring to engage the shunt spring 7 5 to close the said springs to short circuit the substation apparatus. The adjustment of member 5 also winds up the motor spring 21 so that when the finger of the operator is removed from the finger-hold of member 5,, spring 21 restores shaft 4 and ratchet 27. The pawl 29 now engages a tooth in said ratchet and said ratchet carries the gear 26 with it and this motion is transmitted to the governor mechanism G through the agency of the train of gearing, thus allowing the restorationof the device at a predetermined speed. Upon the return movement of the shaft, the ratchet56 affects the pawl 69 as previously described to cause the contacts 60, 65 to be interrupted four times to transmit the proper number of impulses. Upon this re turn to normal of the device the stud 81 again engages the projection of spring 76 again interrupting shunt springs 75, 76. The device is now .at normal and is again ready to be adjusted to effect the transmission of another set of impulses. For a more complete understanding of the calling device shown inithis application, reference may be had to parent application, Serial Number 35,752, filed June 23, 1915.

In illustratingmy invention, I'have shown it operating with a certain form of substation, but I do not wish to be limited to this as the device of my invention is adapted for other uses. I also do not wish to be limited to the exact structure as shown as .many modifications and changes may readily sug-. gest themselves, but I aim tocover all such changes as come within'the spirit and scope of the appended claims. 7 7

'Having described my invention, what I claim asnew and desire to secure by United States Letters Patent, is:

1. A governing device including'a circular cup-shaped member, a spool positioned within said member carrying a semi-circular weighted member-'pivotally attached to the upper and lower plates of said spool, a coiled spring for holding said weighted member in its normal position, an engaging member for said weighted member secured near the fulcrumed extremity of said weighted member and extending out from the peripheral spool-shaped member adapted to fit within said casing, a weighted member-pivotally secured to the said spool member and adapted to engage the inner surface-of said cylindrical casing when the said spool member is revolved, a spring member for normally preventing such engagement, and a member provided with an eccentric pin for regulating the tension of said spring member upon said weighted member.

3. A device .of the class described, including a cylindrical, casing, a centrally positioned rotatable member within said casing, a weighted member secured at its one extremity to said rotatable member, a spring for holding said weighted member in its normal position, a contact piece for said weighted member secured near the fulcrumed extremity of said weighted member and protrudingout from the peripheral surface thereof, means for rotating said rotatable member whereby said contact piece engages the inner surface of said cylindrical casing, and means including a member provided with an eccentrically formed portion for adjusting the tension of said spring.

A. A governing device for an impulse transmitter including a cylindrical easing, a rotatably secured member carrying .a peripherally secured weighted member, a conta ct member attachedto said weighted member for engagingthe inner surface of said casing, a spring for yieldingly holding said weighted member out of engagement with said casing, a rotatable member provided with an eccentrically formed portion for adjusting the tension of said spring, and a train of gearing for rotating said first member whereby said attached member frictionally engages the inner surface of saideasing to govern the speed of rotation of said train of gearing.

5. ,A governing device for an impulse transmitter including a cylindrical casing, a rot-atably secured member carrying a pcripherally secured weighted member, a spring for yieldingly holding said weighted member normally out of engagement with said casing, a train of gearing for rotating said first member whereby said weighted member frictionallyengages the inner surface of said casing to govern thespeed of rotation of said train of gearing, and an adjustably mounted pin provided with an eccentric portion for regulating the tension of said spring.

6. A governing device of the class described including a cylindrical cup, [a rotatably secured spool mounted within said cup, a weighted member secured at its one end near the outerperiphery of theplates of said spool, a coiled tensioning member for holding said weighted member in normal position, adjusting means for regulating the tension of said coiled tensioning v'member, and

a member carried by said weighted member adapted to engage the inner surface of said cup when said spool is rotated to govern the speed of rotation thereof.

7 A governing device including a suitable cylindrical shell, a spool provided with a pair of circular plates mounted within said shell, a semi-circular weighted member fulcrumed at its one end between said plates, a coiled spring for normally holding said weighted member against the shaft of said spool, an engaging member for said weighted member secured near the fulcrumed extremity of said weighted member and ex tending out from the peripheral surface thereof, and driving means for rotating said spool whereby said engaging member frictionally contacts the inner peripheral surface of said shell and acts as a braking means. 1

8. A governing device of the class described including a cylindrical casing, a hollow rotatable shaft provided with an attached upper and a lower circular plate, a weighted member pivotally secured between said plates, a spring for holding said Weighted member in its normal position, an adjustably mounted pin for regulating the tension of said spring, and a driving shaft extending through the hollow of said first shaft for rotating the same to cause said weighted member to frictionally engage the inner peripheral surface of said casing.

9. A governing device of the class described including a cylindrical casing, a hollow rotatable shaft provided with an attached upper and a lower circular plate, a weighted member pivotally secured between said plates, a surface engaging element attached to said weighted member, a spring for holding said weighted member in its normal position, an adjustably mounted pin for regulating the tension of said spring, and a driving shaft extending through the hollow of said first shaft for rotating the 10. A governing device of the class de scribed including a cylindrical casing, a hollow rotatable shaft provided with attached .upper and lower plates, a weighted member carried by said plates, and a driving shaft extending through the hollow of said first shaft for rotating the same to cause the weighted member to frictionally engage the inner surface of said casing.

11. A governing device of the class described including a cylindrical casing, a rotatable member including an upper and a lower circular plate, a weighted member pivotally secured between said plates, a spring for holding said weighted member in its normal position, adjusting means for regulating the tension of said spring, and a driving shaft connected to said rotatable member for rotating the same to cause said weighted member to frictionally engage the inner peripheral surface of said casing.

12. A governing device of the class described including a cylindrical casing, a rotatable member including an upper and a lower circular plate, a weighted member pivotally secured between said plates, a spring for holding said weighted member in its normal position, adjusting means for regulating the tension of said spring, a driving shaft connected to said rotatable member for rotating the same, and an engaging member carried by said weighted member for frictionally engaging the inner peripheral surface of said casing when said weighted member is rotated.

Signed by me at Chicago, county of Cook and State of Illinois, in the presence of two witnesses.

WILLIAM KAISLING.

Witnesses:

G. YnNooHowsKI, WM. BERGHOLM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

